Home / 143,565,078.76-198,118,800.84-78,374,982.76

Finding the Fourth Proportional to 143,565,078.76, 198,118,800.84 and 78,374,982.76

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Solution

The fourth proportional to 143,565,078.76, 198,118,800.84 and 78,374,982.76 is: 108,156,926.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,565,078.76 : 198,118,800.84 = 78,374,982.76 : x
  2. Step 2: Convert to fraction form
    143,565,078.76/198,118,800.84 = 78,374,982.76/x
  3. Step 3: Cross multiply
    143,565,078.76x = 198,118,800.84 × 78,374,982.76
  4. Step 4: Simplify right side
    143,565,078.76x = 15,527,557,600,266,874
  5. Step 5: Solve for x
    x = 15,527,557,600,266,874/143,565,078.76
  6. Step 6: Final answer
    x = 108,156,926.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.